JEE Chemistry Solved Question Paper 2007 | Previous Year Papers | Zigya

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Structure of ammonia is

  • pyramidal

  • tetrahedral

  • trigonal

  • trigonal pyramidal


2.

Which of the following contains both covalent and ionic bond ?

  • CCl4

  • CaCl2

  • NH4Cl

  • H2O


3.

The bond energy is the energy required to

  • dissociate one mole of the substance

  • dissociate bond in 1 kg of the substance

  • break one mole of similar bonds

  • break bonds in one mole of substance


4.

For the reaction,

2H2(g) + O2(g)  2H2O(g), H°= - 573.2 kJ

The heat of decomposition of water per mole is

  • 286.6 kJ

  • 573.2 kJ

  • -28.66 kJ

  • Zero


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5.

For an ideal gas, the heat of reaction at constant pressure and constant volume are related as

  • H + E = pV

  • E = H + pH

  • qp = qv + nRT

  • None of the above


6.

Hess's law is based on

  • law of conservation of mass

  • law of conservation of energy

  • first law of thermodynamics

  • None of the above


7.

Which of the following is a path function?

  • Internal energy

  • Enthalpy

  • Work

  • Entropy


8.

The pH of a 10-8 molar solution of HCl in water is

  • 8

  • between 7 and 8

  • between 6 and 7

  • None of these 


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9.

The solubility of AgCl is 1 x 10-5 mol/L. Its solubility in 0.1 molar sodium chloride solution is

  • 1 × 10-10

  • 1 × 10-5

  • 1 × 10-9

  • 1 × 10-4


10.

When ammonium chloride is added to ammonia solution, the pH of the resulting solution will be

  • increased

  • seven

  • decreased

  • unchanged


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